<template>
	<view class="container">
		<!-- 小程序头部兼容 -->
		<!-- #ifdef MP -->
		<view class="mp-search-box">
			<input class="ser-input" type="text" value="输入关键字搜索" disabled />
		</view>
		<!-- #endif -->
		
		<!-- 头部轮播 -->
		<view class="carousel-section">
			<!-- 标题栏和状态栏占位符 -->
			<view class="titleNview-placing"></view>
			<!-- 背景色区域 -->
			<view class="titleNview-background" :style="{backgroundColor:titleNViewBackground}"></view>
			<swiper class="carousel" circular @change="swiperChange">
				<swiper-item v-for="(item, index) in carouselList" :key="index" class="carousel-item" @click="navToDetailPage({title: '轮播广告'})">
					<image :src="item.src" />
				</swiper-item>
			</swiper>
			<!-- 自定义swiper指示器 -->
			<view class="swiper-dots">
				<text class="num">{{swiperCurrent+1}}</text>
				<text class="sign">/</text>
				<text class="num">{{swiperLength}}</text>
			</view>
		</view>
		
		
		<!-- 猜你喜欢 -->
		<view class="f-header m-t">
			<image src="/static/temp/h1.png"></image>
			<view class="tit-box">
				<text class="tit">猜你喜欢</text>
				<text class="tit2">Guess You Like It</text>
			</view>
			<text class="yticon icon-you"></text>
		</view>
		
		<view class="guess-section">
			<view 
				v-for="(item, index) in goodsList" :key="index"
				class="guess-item"
				@click="navToDetailPage(item)"
			>
				<view class="image-wrapper">
					<image :src="item.image" mode="aspectFill"></image>
				</view>
				<text class="title clamp">{{item.title}}</text>
				<text class="price">￥{{item.price}}</text>
			</view>
		</view>
		

	</view>
</template>

<script>

	export default {

		data() {
			return {
				titleNViewBackground: '',
				swiperCurrent: 0,
				swiperLength: 0,
				carouselList: [],
				goodsList: []
			};
		},

		onLoad() {
			this.loadData();
		},
		methods: {
			/**
			 * 请求静态数据只是为了代码不那么乱
			 * 分次请求未作整合
			 */
			async loadData() {
				let carouselList = await this.$api.json('carouselList');
				this.titleNViewBackground = carouselList[0].background;
				this.swiperLength = carouselList.length;
				this.carouselList = carouselList;
				
				let goodsList = await this.$api.json('goodsList');
				this.goodsList = goodsList || [];
			},
			//轮播图切换修改背景色
			swiperChange(e) {
				const index = e.detail.current;
				this.swiperCurrent = index;
				this.titleNViewBackground = this.carouselList[index].background;
			},
			//详情页
			navToDetailPage(item) {
				//测试数据没有写id，用title代替
				let id = item.title;
				uni.navigateTo({
					url: `/pages/product/product?id=${id}`
				})
			},
		},
		// #ifndef MP
		// 标题栏input搜索框点击
		onNavigationBarSearchInputClicked: async function(e) {
			this.$api.msg('点击了搜索框');
		},
		//点击导航栏 buttons 时触发
		onNavigationBarButtonTap(e) {
			const index = e.index;
			if (index === 0) {
				this.$api.msg('点击了扫描');
			} else if (index === 1) {
				// #ifdef APP-PLUS
				const pages = getCurrentPages();
				const page = pages[pages.length - 1];
				const currentWebview = page.$getAppWebview();
				currentWebview.hideTitleNViewButtonRedDot({
					index
				});
				// #endif
				uni.navigateTo({
					url: '/pages/notice/notice'
				})
			}
		}
		// #endif
	}
</script>

<style lang="scss">
	/* #ifdef MP */
	.mp-search-box{
		position:absolute;
		left: 0;
		top: 30upx;
		z-index: 9999;
		width: 100%;
		padding: 0 80upx;
		.ser-input{
			flex:1;
			height: 56upx;
			line-height: 56upx;
			text-align: center;
			font-size: 28upx;
			color:$font-color-base;
			border-radius: 20px;
			background: rgba(255,255,255,.6);
		}
	}
	page{
		.cate-section{
			position:relative;
			z-index:5;
			border-radius:16upx 16upx 0 0;
			margin-top:-20upx;
		}
		.carousel-section{
			padding: 0;
			.titleNview-placing {
				padding-top: 0;
				height: 0;
			}
			.carousel{
				.carousel-item{
					padding: 0;
				}
			}
			.swiper-dots{
				left:45upx;
				bottom:40upx;
			}
		}
	}
	/* #endif */
	
	
	page {
		background: #f5f5f5;
	}
	.m-t{
		margin-top: 16upx;
	}
	/* 头部 轮播图 */
	.carousel-section {
		position: relative;
		// padding-top: 10px;

		.titleNview-placing {
			height: var(--status-bar-height);
			// padding-top: 44px;
			box-sizing: content-box;
		}

		.titleNview-background {
			position: absolute;
			top: 0;
			left: 0;
			width: 100%;
			height: 300rpx;
			transition: .4s;
		}
	}
	.carousel {
		width: 100%;
		height: 350upx;

		.carousel-item {
			width: 100%;
			height: 100%;
			padding: 0 28upx;
			overflow: hidden;
		}

		image {
			width: 100%;
			height: 100%;
			border-radius: 10upx;
		}
	}
	.swiper-dots {
		display: flex;
		position: absolute;
		left: 60upx;
		bottom: 15upx;
		width: 72upx;
		height: 36upx;
		background-image: url();
		background-size: 100% 100%;

		.num {
			width: 36upx;
			height: 36upx;
			border-radius: 50px;
			font-size: 24upx;
			color: #fff;
			text-align: center;
			line-height: 36upx;
		}

		.sign {
			position: absolute;
			top: 0;
			left: 50%;
			line-height: 36upx;
			font-size: 12upx;
			color: #fff;
			transform: translateX(-50%);
		}
	}
	//猜你喜欢标题
	.f-header{
		display:flex;
		align-items:center;
		height: 140upx;
		padding: 6upx 30upx 8upx;
		background: #fff;
		image{
			flex-shrink: 0;
			width: 80upx;
			height: 80upx;
			margin-right: 20upx;
		}
		.tit-box{
			flex: 1;
			display: flex;
			flex-direction: column;
		}
		.tit{
			font-size: $font-lg +2upx;
			color: #font-color-dark;
			line-height: 1.3;
		}
		.tit2{
			font-size: $font-sm;
			color: $font-color-light;
		}
		.icon-you{
			font-size: $font-lg +2upx;
			color: $font-color-light;
		}
	}
	
	/* 猜你喜欢 */
	.guess-section{
		display:flex;
		flex-wrap:wrap;
		padding: 0 30upx;
		background: #fff;
		.guess-item{
			display:flex;
			flex-direction: column;
			width: 48%;
			padding-bottom: 40upx;
			&:nth-child(2n+1){
				margin-right: 4%;
			}
		}
		.image-wrapper{
			width: 100%;
			height: 330upx;
			border-radius: 3px;
			overflow: hidden;
			image{
				width: 100%;
				height: 100%;
				opacity: 1;
			}
		}
		.title{
			font-size: $font-lg;
			color: $font-color-dark;
			line-height: 80upx;
		}
		.price{
			font-size: $font-lg;
			color: $uni-color-primary;
			line-height: 1;
		}
	}
	

</style>
